Sign holder



FIG. 1 is a front perspective view of a sign holder showing a first embodiment of our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof, the right side view being a mirror image of the left side view;

FIG. 5 is a top view thereof; and

FIG. 6 is a bottom view thereof.

FIG. 7 is a front perspective view of a sign holder showing a second embodiment of our new design;

FIG. 8 is a front view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a right side view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a top view thereof; and,

FIG. 13 is a bottom view thereof.

The features shown in broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a sign holder, as shown and described. 